Effect of lithium on grain-boundary precipitation in a Cr-Mn austfnitic steel

Ruedl, E.; Sasaki, Toru

doi:10.1016/0022-3115(83)90299-4

Cited by 25 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As confirmed by other experiments [33][34][35]42], the formation of M 23 C 6 carbides at grain boundaries favored the penetration of Li. The formation of M 23 C 6 precipitates could enhance the dissolution of C, Fe, and Cr in the vicinity of the 304SS specimens' grain boundaries, which led to the matrix being dissolved much easier in these areas.…”

Section: Microstructure Change Of Specimenssupporting

confidence: 78%

“…But there was about 0.0027 wt% N found in liquid Li. The solubility of N was higher than that of Cr and Fe in liquid Li at high temperature [32][33], and the dissolved N can react easily with Li and Cr or Fe to form some corrosion products, such as Li 9 CrN 5 and Li 3 FeN 2 , at high-angle grain boundaries [42]. Li 9 CrN 5 and Li 3 FeN 2 have a tunnel-like structure, which can promote fast exchange of the elements and lead to the penetration of Li into grain boundaries in steels [30].…”

Section: Microstructure Change Of Specimensmentioning

confidence: 99%

See 1 more Smart Citation

Study of the corrosion behaviors of 304 austenite stainless steel specimens exposed to static liquid lithium at 600 K

Meng

Zuo

Ren

et al. 2016

Journal of Nuclear Materials

View full text Add to dashboard Cite

Investigation of corrosion behavior of stainless steel served as one kind of structure materials exposed to liquid lithium (Li) is one of the keys to apply liquid Li as potential plasma facing materials (PFM) or blanket coolant in the fusion device.Corrosion experiments of 304 austenite stainless steel (304SS) were carried out in static liquid Li at 600 K and up to1584 hours at high vacuum with pressure less than 4×10 -4 Pa. After exposure to liquid Li, it was found that the weight of 304SS slightly decreased with weight loss rate of 5.7×10 -4 g/m 2 /h and surface hardness increased by about 50HV. Lots of spinel-like grains and holes were observed on the surface of specimens measured by SEM. By further EDS, XRD and metallographic analyzing, it was confirmed that the main compositions of spinel-like grains were M 23 C 6 carbides, and 304SS produced a non-uniform corrosion behavior by preferential grain boundary attack, possibly due to the easy formation of M 23 C 6 carbides and/or formation of Li

show abstract

Section: Microstructure Change Of Specimenssupporting

confidence: 78%

Section: Microstructure Change Of Specimensmentioning

confidence: 99%

Study of the corrosion behaviors of 304 austenite stainless steel specimens exposed to static liquid lithium at 600 K

Meng

Zuo

Ren

et al. 2016

Journal of Nuclear Materials

View full text Add to dashboard Cite

show abstract

“…Nevertheless, the chromium reactions may be driven by the relatively high nitrogen concentrations of some of the Fe-Cr-Mn alloys (see Table 1). Reactions between Cr and N and between Li, Cr, and N are possible [5,10,11] and could lead to increased dissolution and/or reaction product formation at specimen surfaces. The significant intergranular penetration observed for some of these alloys in static lithium [4][5][6] was related to the presence of such reaction products at grain boundaries.…”

Section: Discussionmentioning

confidence: 99%

“…Reactions between Cr and N and between Li, Cr, and N are possible [5,10,11] and could lead to increased dissolution and/or reaction product formation at specimen surfaces. The significant intergranular penetration observed for some of these alloys in static lithium [4][5][6] was related to the presence of such reaction products at grain boundaries. In contrast, there was no evidence for intergranular attack of the alloys exposed in the present experiments even though several of the compositions were common to both studies.…”

Section: Discussionmentioning

confidence: 99%

“…Of particular interest is the corrosion of Fe-Cr-Mn alloys by molten lithium, which is a possible coolant and/or tritium-breeding fluid for D-T fusion reactors. To date, studies of the corrosion of these alloys by molten lithium were conducted under static conditions [2][3][4][5][6]. In this paper, qualitative results on the corrosion of a number of Fe-Cr-Mn alloys exposed to thermally convective lithium are presented and compared to the earlier work in a static lithium environment.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion of Fe-Cr-Mn alloys in thermally convective lithium

Tortorrelli

DeVan

1986

Journal of Nuclear Materials

View full text Add to dashboard Cite

MASTER AbstractA series of austenitic Fe-Cr-Mn steels was exposed to circulating lithium at temperatures up to 500°C. Two groups of the alloys, which contained 12 to 30 wt % Mn and 2 to 20 wt % Cr, were sequentially exposed for periods greater than 3000 h in a type 316 stainless steel thermal convection loop. Mass transfer of manganese caused very large weight losses from the steels containing 30 wt % Mn. However, the actual magnitude of corrosion losses for alloys containing 12 to 20 wt % Mn was difficult to establish due to competing surface reactions involving chromium. DISCLAIMERThic report wat prepared at aa aoooaat of work sponsored by aa agency of the United Statas Government. Neither tlie Uafted States. Government aor aay agency thereof, acr any of their emploveei, maket any warranty, express or implied, or anaaiet any legal liabMHy or loaaoaaibility for the aocaracy, completeness, or isefaiatai of aay iaformatioa, apaaraftw, prodact, «r prooeif disclosed, or represoats that its me would aot iafnafe privately owaed lajjhtt. Rafcr* eoce herein to any specific commercial prodact, procon, or twvioe by trade aaaw, ttataMik, maaufactarer, or otherwise doe* not aeooMarily ooaatitaUi or iaeply Hs i meadatioa, or favoriac by the United States Gowmeat or aay agaacy theraoT. He viewt and opiaioas of authors expressed herein do aot aecisssarily Mate or nflect that* of the United States Oownuneat or any anacy thereof.

show abstract